Coupling



J. T. HONEN.

COUPLING.

APPLlcATloN man MAR. 2o. 1919.

1,383,230.93.` Patented July 5, 1921.

JAMES T. HONEN, 01"'A CLEVELAND, OHIO, ASSIGNOR T0 THE GRABLER MANUFAC- TURING COMPANY, OF CLEVELAND,.OHIO, A CORPORATION OF OHIO.

coUPLi'NG.

Specification of Letters Patent.

Application led March 20, 1919. Serial No. 283,839.

To all whom t may concern .Be it known that I, JAMES T. HONEN, a citizen of the United States. residing at Clevelanda in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Couplings, of which the following is a full, clear, and exact description, reference being had to the accompaiiying drawings.

This invention yrelates to` an improved coupler for use in electrical work for connecting conduits or armored cables to switch boxes, outlet boxes, or other receptacles.

The object of the invention is to provide a simply constructed and inexpensive device y of the aforesaid character that possesses the maximum of holding eiiciencyand through which the work of attaching the conduit or cable to the receptacle is minimized. Y

To these ends I provide a bushing or sleeve designed at one end for connection tol an outlet box or receptacle in register'with` a wire receiving aperture thereof and incorporating a` clamping relement preferably in the nature vof a roller clutch, which will, when the conduit is projected into the sleeve or bushing.r yield readily to admit the same but which will act to resist withdrawal of the conduit with accumulating force as the pull upon the conduit is increased; and prefn erably. the clamping element is arranged to enter a groove between adjoining convolu-` tions of an armored cable so that upon a turning of the cable the same will be fed inward. to engage its inner end snugly against the shoulder usual in couplers of this sort.

In the drawings accompanying and forming a part hereof, and ywherein similar reference characters are used to designate corresponding parts` Figure 1 is a perspective view of the coupler with the end of an armored cable or conduit inserted therein; Fig. 2 is a sectional view through an outlet box oil receptacle having cables or conduits attached thereto by means of my improved coupler; and Fig. 3 is a sectional the line of Fig. 2.

The receptacle 1 of the present.illustration is au outlet box provided with the usual knock out7 slugs 2 which, until removed, close the wire admitting apertures 3.

My improved coupler consists of a sleeve or bushing 5 that is shown as having near one end a wrench receiving portion 6 beyond which the sleeve is threaded, as indicated at detail on 7, and of a diameter to enter one of the wire receiving apertures 3 of the receptacle; and inside the receptacle the portion 7 has applied to it a clamping nut 9. The opening 10 at the inner end of the coupler is of less diameter than the interior of the sleeve so as to provide a shoulder 11,' and it will be observed that the edgeof the aperture 10 is roundedto prevent injury to the insulation of the wires or conductors'12.

i clamping yelement 13, in the form of a cylindrical pin or roller, extends tangentially through one side of the sleeve and intersects the `interior thereof slightly, as indicated in Fig. The ends of the pin or roller are guided within slots 16 extending longitudinally of the sleeve but inclined toward the axis thereof from the inner toward the outer end (the end of the sleeve designed for attachment to the receptacle being regarded as Jthe inner end). The essential point is that the wall or part of the device which resists outward movement of the clamping element in a direction radially of the sleeve be inclined inwardly from the inner toward the outer end of the sleeve.. The construction shown is easy and economical of manufacture. and the ends of the pin or roller 15, where they project beyondthe slots 16, are riveted over or upset as shown at 17, thus serving to hold the pin against displacement and providing a very convenient means for manipulating the clamping element when it is desired to release the conduit. j

In connecting a conduit to a receptacle by means of my improved coupler, a slug 2 is knocked out ofthe receptacle to provide an aperture 3 through which the threaded' end of the coupler is projected. A nut 9 is applied tol the inner end of the sleeve to draw the shoulder, provided in the present instance by the wrench receiving portion 6, into firm contact with the outer wall of the receptacle. The end of the conduit 20 is then inserted into the sleeve of the coupler until its inner end abuts or is adjacent the shoulder 11. The clamping element 15 may now be wedged between the conduit and the opposed inclined wall of the coupler with sufiicient tightness to resist withdrawal of the conduit, the element automatically assum- Patented July 5, 1921.

ing such condition if the coupler occupiesa lll? ; consisting of a sleeve designed at sleeve. Y

Having thus described my. invention, what y Vadmitting aperture coacting with the clamping element 1in the nature of a screw, willV force the inner end of the 'conduit into firm contact with theishoul-V der ll. With the parts infsuch conditioin' the conduit is effectually drawal until the locking element is dislodgedr and moved towardi. A device ofthe character set 'forth' consistingof a sieeve designed for attachment to a receptaclein register with a wire' thereof, and means carried by said sleeveV permitting the easy introduction ofthe endof a conduit *into the sleeveand acting automatically to lock the conduit against vwithdrawal therefrom. 1

2. A device ofV the character set forth consisting of a Sleeve designed for attachment to a receptacle in register with a wire admittingn aperture thereof and a locking element disposed within the sleeve and having a part projecting without the samesaid element permitting easy introduction oftheV end of a conduit into Lthe sleevewhile acting to resist withdrawal i element being adapted to be rendered inef-` fective byV manipulation-of its parts disf posed-exteriorlyof the sleeve.

3. Av deviceof the character set forth con#` sisting o fffa sleeve designed for. attachment to an outlet hex -in register with a wire adi mitting aperture thereof, said sleeve .havinga part inclined with respectY to its longitudinal axis inwardly fromlthe end designed for attachment to the outlet hex toward its Op.- posits end, and an element Vcarriedrby the sleeve adjacent said partand adapted to loe wedgedrbetween the same and an opposed part of a conduit inserted within said sleeve to withhold the conduit against withdrawal.A

ll. A devicel .of the character set fferthV Y one end for attachment to `a receptacle in register with a `wire receiving aperture thereof andr having-a part inclined inwardly from said end toward the opposite end, and arollerarranged to operate between said: part and an opposed part of a conduit when the latter is inserted within the sleeve thereby tovhold the conduit against withdrawal. A Y i forth.

5. A device of the character set consisting of a sleeve designed at one end( for attachment to a receptacle 1n register sleeve from held against with-A f,

the innerend of thef" 6. A device of the means aty one end thereof, the locking with a wire receiving aperture thereof, said sleeve having opposed slots along one side that are inclined toward 'the axis of the 'the aforesaid end toward the opposite end, and a roller having its ends confined within said slots.

character set forth consisting Vof a sleeve designed at one end for attachment to a receptacle and having a part inclined inwardly frornsaid end toward its opposite end, a roller disposed for coperation with said part and for engagement within aspiralV groove and of an armored conduit` adapted to be received by said sleeve, said roller being free to yield to the angular inclination of the groove.v

7, A device Aof the1 characterwset forth consistingV of a sleeve having attaching andprovided with a wall that is inclined inwardly from said end toward its opposite end, the sleeve being pro-. vided with slots on opposite sides of the in* clined "wall, aV cylindrical pin extending through said-slots and .arrangedfor engagement with the inclined wall, the ends of the vpin' being headed to prevent withdrawal from the slots. v I

8. :A ldevice ofthe character set forth consisting of a, sleeve shoulder spaced "fromv one of its ends, the sleeverbeing threaded between said shoulder andsaidfend and having an internal shoulder adjacent `saidfend and a wallfthat is'inclined inwardly from its external shoulder toward its opposite endfthe' sleeve being nrovidedwith slots on opposite sides of said inclined'wall,` and a( pin extending through said slots and arranged to cooper-ate with said wall.. l Y Y 9. Af device of the characterset forth consisting Lof a sleeve having an external shoulder inthe nature of a wrench receivf ing portion and threaded at one end beyond theA same, one of th 4 walls of the sleeve be-l ingfinclined inwardly from said shoulder toward the other .end ofthe sleeve,1the sleeve havin-g Slots on opposite sides of litsinclined wall', `and a pin. extending looselythrough said slots and arranged for coperation with thelrinclined wall, said pins beingproviderd with heads beyond said slotsj ln testimony whereof, I hereunto signature. 4 Y l Y a ff 1 Janes rnonnn.

affix my 'l 

